Recombinant Human Transport and Golgi organization protein 1 homolog (MIA3), Truncated

Uniprot Id

Q5JRA6

Target Species

Human

Target Name

MIA3

Target Full Name

Transport and Golgi organization protein 1 homolog

Target Function

Plays a role in the transport of cargos that are too large to fit into COPII-coated vesicles and require specific mechanisms to be incorporated into membrane-bound carriers and exported from the endoplasmic reticulum. This protein is required for collagen VII (COL7A1) secretion by loading COL7A1 into transport carriers. It may participate in cargo loading of COL7A1 at endoplasmic reticulum exit sites by binding to COPII coat subunits Sec23/24 and guiding SH3-bound COL7A1 into a growing carrier. Does not play a role in global protein secretion and is apparently specific to COL7A1 cargo loading. However, it may participate in secretion of other proteins in cells that do not secrete COL7A1. It is also specifically required for the secretion of lipoproteins by participating in their export from the endoplasmic reticulum. Required for correct assembly of COPII coat components at endoplasmic reticulum exit sites (ERES) and for the localization of SEC16A and membrane-bound ER-resident complexes consisting of MIA2 and PREB/SEC12 to ERES.

Target Subcellular Location

Endoplasmic reticulum membrane; Single-pass membrane protein.

Target Protein Families

MIA/OTOR family, Tango1 subfamily

Target Tissue Specificity

Broadly expressed, except in bone marrow and peripheral blood mononuclear cells. Down-regulated in melanoma tissue.

Target Synonyms

ARNT; C219 reactive peptide; C219-reactive peptide; D320; Melanoma inhibitory activity family; member 3; Melanoma inhibitory activity protein 3; Mia3; MIA3_HUMAN; RP11-378J18.4; TANGO; Transport and Golgi organization protein 1; UNQ6077